Question about Denon DRA-395 Receiver
The memory function for the FM tuner on my older Onkyo TX-28 is not working. It will hold the stations in memory while turned on and even if you turn it off and turn it back on. However, if you leave it off for a while it will loose the stored stations. Can I fix this fairly easily?
Replace super capacitor in the front board (C712) with part # 598-EDLF473A5R5C .47F 5.5V form Mouser Electronics. I did. It worked.
Posted on Feb 08, 2012
FOUND IT!! Memory problems on a TX28 (and others I guess). There is no battery in these units (unlike computers). The guilty part is a capacitor called a Memory Backup Capacitor. I have a Onkyo TX28 and a Yamaha tuner with the same problems. As previously pointed out in earlier postings, it is part C172 in the TX28. It is a black polarized Cap that looks like a small drum, (like a button battery actually). The refs are 0.047 farads, 5.5 volts SUPER CAPACITOR. I took mine out of the TX 28 and it shows some leakage. It is on the top part of the front-end board. Is can be de-solded from the top (no need to remove circuit board, just the top cover). It costs about a buck fifty. Order online, replace and resolder.....VOILA......
Posted on Feb 17, 2012
My TX-28 has same problem. I will fix it by tossing it and getting a much better replacement .. not an Onkyo ... I've issues with two diff Onkyo products .. not again
Posted on Jan 15, 2011
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Posted on Jan 02, 2017
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